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Are you sick of having to slowly mine cobblestone from your cobblestone generator? Consider making a dual (or double) cobblestone generator! A dual cobblestone generator is a lot more efficient. You're able to alternate between the two blocks so you don't have to wait for cobblestone to generate one at a time. This is especially useful on Skyblock since there are no other sources of cobblestone. Move on to Step 1 below to get started.

Steps

1

Gather the materials you will need. You'll need a bucket of lava, two buckets of water, and 41 non-flammable blocks such as stone or dirt. You can reuse one bucket for the lava and water.

Stone and stone bricks are good to use. You could use cobblestone, however, it may be a little confusing to tell where you have to mine because the generated cobblestone will blend in.

2

Find a space that is 6x6 blocks large and at least 3 blocks high. The image above shows the area you will be placing blocks on.

3

Make an L shape on the ground by placing 3 blocks horizontally and 3 blocks vertically.

4

Mirror the L shape on the other side.

5

Add a second layer of blocks on top of the L shapes but do not place a block in the center.

6

Place 4 blocks opposite one of the L shapes to create a wall.

7

Add 2 more blocks to the end of the wall.

8

Repeat Steps 6 and 7 for the other side.

9

Put 1 block at the end of the crevice on one side. Repeat this on the other side.

10

Place 2 blocks on the top of one side, with 1 block covering the crevice. Repeat this on the other side.

11

Add 2 blocks to the top layer to create a 1 block hole in the top.

12

Place a bucket of water at the end of one of the sides. Repeat this on the other side.

13

Place the bucket of lava in the top hole.

14

Your cobblestone generator is finished! You can mine cobblestone from one side, then move onto the next while the other one is still generating.

Yes, you can, just make sure the block you're using is NOT flammable. Blocks that will work include: sandstone, quartz, diamond, emerald, stone bricks, bricks, obsidian, and bedrock, just to name a few.

Your lava turned to obsidian because water was poured onto the lava source block. When generating cobble, always make sure you water is touching lava that is flowing and not standing still. When water touches lava that is standing still, that lava will become obsidian.

A dual cobble generator is unique because it lets you mine cobble more slowly. Another idea to make the cobble generator more unique is if you have a redstone clock that powers a piston, which would push the cobble away for you to mine.

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wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. To create this article, volunteer authors worked to edit and improve it over time. This article has also been viewed 17,469 times.